api-limitation.patch: Do expansion of $primary_hostname on every call;
for some reason, it were getting overwritten between calls despite
using the permanent memory pool in accordance with Exim documentation
(Closes: #926952). Also start using body_linecount again since it's
now part of the API.

remove-header-crs.patch (new): Strip out carriage returns from header
lines returned by spamd when the spool file is in wire format
(Probably closes: #879687; it's a bit unclear what the bug is about).

delete-ext-html-references.patch (new): sa.html, which is shipped in
the doc directory, is a copy of the author's webpage on sa-exim from
his website, but without the images or linked pages, which means that
most of the images and links don't work, except the SourceForge logo,
which was fetched from sourceforge.net, causing a privacy concern. We
drop the images and make the non-absolute links relative tohttp://marc.merlins.org/linux/exim/.

greylisting-ipv6.patch: Finally add IPv6 support to the greylisting
plugin (Closes: #508161). Replaces grey-only-ipv4.patch. Based on
Robert Tasarz's patch, though I decided to do things a little
differently by keeping the greylistfourthbyte option for backwards
compatibility and not adding separate options for IPv4 and IPv6 at
this time. Also, with that option enabled, there will only be one
directory level for all the last 64 bits of an IPv6 address.